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The Wire · Showcase

TYPES RECEIVER BUG FIXED, ARM64 COMPILER ISSUES PATCHED

By RepoJournal · Filed · About Go

The Go compiler lands three critical fixes overnight while gopls gains generic interface support and VS Code extension v0.54.0 ships with interactive code actions.

The types2 package fixed a violation of its Instances invariant where selector expressions on methods were dropping receivers [1], breaking the foundational contract that instantiating Uses[id].Type() with Instances[id].TypeArgs produces an equivalent of Instances[id].Type. This stashes the receiver in a new field checked at recording time. Simultaneously, cmd/compile shipped fixes for a right-shift miscompilation on ARM64 caused by a copy-paste error using 64-bit comparison for 32-bit shift values [2], and extended ADCQ and SBBQ to handle InvertFlags operations [3]. On the tooling front, gopls now supports generic interfaces in its stub method generation, properly instantiating type parameters from the LHS instead of inserting free variables [4], while the tools repo completed an internal restructuring moving internal/tool into gopls/internal/tool [5]. The VS Code extension released v0.54.0 with interactive code actions that prompt users for input before executing sophisticated refactorings like struct field tag manipulation and interface implementation [7], with v0.55.0 following as a pre-release identical build [8]. Routine dependency updates landed across tools [6], benchmarks [9], and perf [10] repos.

Action items

References

  1. [1] go/types, types2: stash receivers on method selections golang/go
  2. [2] cmd/compile: fix misscompilation of Rsh with 32bits rhs on arm64 golang/go
  3. [3] cmd/compile: add the ability to eat InvertFlags to ADCQ and SBBQ golang/go
  4. [4] gopls/internal/golang/stubmethods: support generic interfaces golang/tools
  5. [5] gopls: move internal/tool into gopls/internal/tool golang/tools
  6. [6] go.mod: update golang.org/x dependencies golang/tools
  7. [7] Release v0.54.0 ↗ golang/vscode-go
  8. [8] Release v0.55.0 ↗ golang/vscode-go
  9. [9] go.mod: update golang.org/x dependencies golang/benchmarks
  10. [10] go.mod: update golang.org/x dependencies golang/perf

FAQ

What changed in Go on June 11, 2026?
The Go compiler lands three critical fixes overnight while gopls gains generic interface support and VS Code extension v0.54.0 ships with interactive code actions.
What should Go teams do about it?
Pull the types2 receiver fix to ensure Instances invariant compliance in your type checking code • Test ARM64 builds with the right-shift and flag handling patches before next release • Update gopls and vscode-go to 0.54.0+ for generic interface and interactive refactoring support
Which Go repositories shipped on June 11, 2026?
golang/go, golang/tools, golang/vscode-go, golang/benchmarks, golang/perf

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